Re-add dropped printIncludes (#4820)
Re-add dropped printIncludes (#4820)

Dropped with commit d5219c9, but required by targets created via EmitC.
iree-org/iree,iree-org/iree,google/iree,google/iree,iree-org/iree,google/iree,google/iree,iree-org/iree,google/iree,iree-org/iree,iree-org/iree,google/iree,iree-org/iree,google/iree